Art of spinning and treating paper



Sept. 15, 1931.' f Jjn. lCRAMER ET AL. 1,823,258

ART OF SPINNING AND TREATING PAPER Filed Sept. 12, 1929 lPatented Sept. A 15, 1931 gether to pro-vide wide open meshes-through UNITED STATES PATENT oEFlcE JOSEPH D. CRAMER AND ALBERT J. ROGERS, 0F GOSEN, INDIANA, ASSIGNORS TO THE i CHASE BAG COMPANY, 0F NEW YORK, N. Y., A CORPORATION OF DELAWARE ART 0F SPINNNG AND TREATING PAPER application fue@ september 12,l 1929. serial No. 392,110.

The present invention relates to the art of spinning and treating paper, and products woven therefrom,.and the general object or desire is to produce in a simple and inexpensive way an improved strand of paper having a high tensile strength, water repellant properties and a fast color,"from which strong and durable paper bags may be fabricated for shipping and transporting fruits, vegetablesad the like in bulk.I Thus the invention is predicated onI the discovery that many classes of perishable goods, for example, citrus fruits, onions, etc., may be stored or preserved, shlpped and transported with advantage and profit in bags made of heavy strands of colored paper coarsely woven towhich the goods may be viewed in their natural state and colors and also thereby exposed to the atmosphere for ventilation, ripening, to prevent mold, etc. strands are .desired as given colors or combinations of colors for different classes of goods enhance the appearance thereof when displayedthrough the meshes of such bags. As an exemplication, citrus fruits such as oranges are more attractively displayed by using red Vstrands spaced apart from cross strands of light tan or natural color, and yellow onions show u to better advantage in bags woven of lig t yellow strands. The .colored strands must be of fast colors inasmuch as they come in contact with edible goods, and are exposed to varying weather conditions, including moisture or water, and the re uirements also call for bags capable of hol ing heavy loads, say one hundred pounds or more of perishable goods. Obviously, therefore, the wall ofthe bag must be strong and durable and a woven bag made `yof paper must have'warp and woof strands of substantial tensile strength,` especially when coarsely woven andwidely separated to expose and display the goods. Also, the strength of these. strands should not be affected materially when exposed to dampness or a wetting.

In achieving` the objects of Adesire as stated, the treatment accorded the strands in the making thereof, and the steps taken in that Colored 1 connection, are all factors to be considered, These will now be described in greater detail, reference also being had to the accompanying drawing for a preferred form of apparatus for carrying out and practicing the invention.

Thus, `Fig. 1 is an end elevation on a reduced scale, of a machine for spinning paper, and Fig. 2 is a sectional view of parts thereof, on a larger scale, which parts deal with the impregnation of the paper with a coloring solution. Fig. 3 is aside view of a strip Vof paper partly twisted or spun Iinto a strand, and Fig. 4 is a side view of `a small portion of coarsely Woven material made of such twisted strands of paper in different colors. ln practicing the invention, a thin fiat strip of paper 2, approximately one-eighth or less to one-fourth of an inch in width, is unwound 3 'lhence the flat strip passes around a recipro-y cator'y lshaft 8 and over an idler roller 9 to and between a pair of larger rollers 10 and 11, respectively, lc cated directly above the spinning spindle 5. Rollers 10 and 11 function in part to feed the strip onwardfand in part to apply a liquid compound or spinning solution S containing coloring matter, uniformly to the stripv preliminary to twisting or spinning it into a round strand. The solution is contained i'n a large tank or reservoir 12 and fed by a pipe 14 to an open pan -15 containing a .collecting roller 16 which conveys the ysolution to a distributing roller 17 having contact with the impregnating roller 11 around which the paper strip is fedand drawn. The thin paper strip is thoroughly .the solution used promotes spinning of the paper strip uniformly without breakage and imparts to it water'repellant properties and greater tensile strength. Thus a preferred spinning solution consists of an aqueous composition` containing soap emulsifiedwith a preservative oil composed of natral glycerides, in any suitable proportions, including a phenol concentrated dye of any desired color. v

5 Tightly-twisted strands of paper, so treated, are then woven together, preferably with the strands separated or spaced apart approximately one-eighth of an inch more or less, to provide an open-mesh fab ric`in which all the strands may be of the same color, or of diii'erent colors. Preferably the warp strands are more firmly or tightly spun and not subjected to a solutoncontaining -the phenol dye, therefore stiffer and not quite as thick or pliable as the colored weft strands which are treated to an emulsified solution containing such a dye. .In some cases the warp strands may also be colored. If not, it should be understood that they are treated nevertheless with the aforesaid solution without a dye, to make them substantially impervious or more repellant to Water, and to lncrease their tensile strength.

By adding the phenol dye to the emwlsied solution a separate dyeing step or treatment is avoided, the characteristics or properties of the spinning solution somewhat changed, and the coloring of the paper strip made uniform and fast throughout. The steps taken I to produce the colored strands are therefore simple and inexpensive, and the strands so made have al more uniform twist which makes the strand stronger and less apt to break during spinning operations and thereafter when woven into an open mesh fabric and used in a bag as herein described.

What we claim is: i A method of producing twisted strands of paper, consisting .in spinning a narrovrr thin 40r strip of paper into a strand andl impregnating the strip in the same operation by indirect application with af definite amount of preservative coloring solution lhaving' strengthening and water repelling properties.

In testimony whereof we aix our signatures.

JOSEPH D. CRAMER.

ALBERT J. ROGERS. 

